Hi All,

I have been struggling to resolve this problem for long time as well!!

But I am able to fix it by following a method that I saw online. I unplug everything from my laptop and leave it alone. Then long press the power button for 40 seconds, have to be exactly 40 seconds! Then turn on the laptop and connect all cable, HDMI/USBC wire.

It works well now! I am about to connect two monitors at the same time !

🌐
Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 3748489 › usb-c-not-detecting-displays-on-windows-11
USB-C not detecting displays on Windows 11 - Microsoft Q&A
Top answer
1 of 5
173

Hi All,

I have been struggling to resolve this problem for long time as well!!

But I am able to fix it by following a method that I saw online. I unplug everything from my laptop and leave it alone. Then long press the power button for 40 seconds, have to be exactly 40 seconds! Then turn on the laptop and connect all cable, HDMI/USBC wire.

It works well now! I am about to connect two monitors at the same time !

2 of 5
83

Hi All,

I have been struggling to resolve this problem for long time as well!!

But I am able to fix it by following a method that I saw online. I unplug everything from my laptop and leave it alone. Then long press the power button for 40 seconds, have to be exactly 40 seconds! Then turn on the laptop and connect all cable, HDMI/USBC wire.

It works well now! I am about to connect two monitors at the same time !

I can't thank you enough~!!

I struggled for a couple of hours trying to get it to work after some updates and holding the power button like that and following this actually worked!!!!!!

Thank you thank you thank you

🌐
Reddit
reddit.com › r/windows10howto › windows 11 fails to detect usb-c monitor
r/Windows10HowTo on Reddit: Windows 11 fails to detect USB-C monitor
February 6, 2024 - Do you think microsoft will start 'upgrading' peoples operating systems to windows 11 while they are away from their computer not looking ... USB-C Dock Gen 2 - external monitors are not detected. How to reset it? ... USB-C stopped detecting second monitor (2nd port still does, and original does work for power) (lenovo slim 7 laptop)
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Windows 11 Forums
windows11forums.com › windows 11 forums › windows 11 support
Windows 11 PC is not detecting my second monitor (usb-c) | Windows 11 Forums
October 30, 2023 - I did the following: 1. uninstalled ... what could be happening here? Thanks! ... John, go into Device Manager and verify each usb port is not powered off to save battery power....
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Lifewire
lifewire.com › fix-windows-11-second-monitor-8677618
How to Fix It When Windows 11 Isn't Detecting a Second Monitor
August 15, 2024 - Ensure that all of the connecting cables are fully seated on both the monitor and computer ends. Try a different cable connection. If your computer or connected dock has multiple ports, try connecting your second monitor to one of these instead.
🌐
HP Support Community
h30434.www3.hp.com › t5 › Notebook-Video-Display-and-Touch › Laptop-not-detecting-dual-monitor-through-USB-C-anymore › td-p › 9167551
Laptop not detecting dual monitor through USB-C anymore - HP Support Community - 9167551
September 3, 2024 - If the latest update triggered the issue, you might want to roll back the display or USB-C driver to an earlier version that worked. Go to Settings > System > Display, and click Detect to see if Windows recognizes any external displays.
🌐
Tweaking
tweaking.com › knowledge base › how to › how to fix windows 11 not detecting your second monitor
Windows 11 Not Detecting Your Second Monitor: 7 Best Fixes
July 15, 2024 - Dual monitors can transform your computing experience, making it easier to work on multiple tasks simultaneously. Yet, encountering issues with Windows 11 not detecting your second monitor can be a common but fixable problem. Whether connecting via HDMI, DisplayPort, or USB-C, this guide will ...
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How-To Geek
howtogeek.com › home › windows › 8 fixes for a second monitor not detected on windows
8 Fixes for a Second Monitor Not Detected on Windows
October 30, 2025 - If the monitor or any in-between device, such as an active HDMI repeater, isn't getting power, then Windows won't detect the display. Speaking of which, if you have a complicated setup with in-between devices such as a USB dock or HDMI repeater, try connecting the display without any of those devices in the chain; this will help you narrow down whether the problem is with one of those gadgets rather than with Windows or the monitor itself.
🌐
HP Support Community
h30434.www3.hp.com › t5 › Notebook-Video-Display-and-Touch › External-monitor-not-working-via-USB-Type-C-windows-11 › td-p › 8204817
External monitor not working via USB Type-C windows 11 - HP Support Community - 8204817
December 13, 2021 - but not via USB-C ... NOT support Alt mode nor Power Delivery. You can ... BH *** **Click the KUDOS thumb up on the left to say 'Thanks'** Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem. ... is there any way around this? How can you connect extra monitors ? It worked prior to the Windows 11 download. ... If you wish to have 2 or more external monitors (and notebook monitor - total 3), please enter your requirement on the following link and it will find for you few USB-A
Find elsewhere
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MiniTool
minitool.com › home › news › how to fix windows 11 not detecting second monitor [4 ways]
How to Fix Windows 11 Not Detecting Second Monitor [4 Ways] - MiniTool
August 10, 2023 - How to install or set up Windows 11 without Internet? Here is a full guide for you. ... Restarting your computer might also get rid of the “second monitor not detected Windows 11” error.
🌐
Microsoft Support
support.microsoft.com › en-us › windows › troubleshoot-external-monitor-connections-in-windows-5b46f4a4-9634-06bb-7622-f960facdfd49
Troubleshoot external monitor connections in Windows - Microsoft Support
You'll need one of the following ... your PC, contact the manufacturer of your PC. USB adapter – If you have a USB-C port, you may be able to use a USB adapter to give your device an additional video output port....
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Windows Report
windowsreport.com › windows 11 › how to › fix second monitor not detected error
Second Monitor Not Detected in Windows 11: 4 Tested Solutions
August 14, 2025 - Use the monitor’s on-screen menu to ensure the selected input matches the cable type you’re using (e.g., HDMI, DisplayPort, USB-C). Sometimes the display is connected but not configured to extend or duplicate. To check: Press Windows + P to open the projection menu. Select either Duplicate or Extend. If it’s set to “PC screen only,” the second monitor will remain inactive.
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Driver Easy
drivereasy.com › home › knowledge base › common errors › fix second monitor not detected on windows 11/10 [solved]
Fix Second Monitor Not Detected on Windows 11/10 [Solved] - Driver Easy
October 22, 2025 - Commonly , Windows 10 cannot detect the second monitor is due to the incompatible display driver. Follow this guide to get the correct display driver.
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iTech Hacks
itechhacks.com › home › windows › how to fix windows 11 not detecting second monitor (10 ways)
How to Fix Windows 11 Not Detecting Second Monitor (10 Ways)
July 6, 2025 - Solutions include checking cables, restarting the system, updating drivers, and forcing Windows to detect the monitor. People prefer using the multi-screen setup with two or more monitors. With Windows 11, many users are facing problems like the second monitor not being detected.
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YouTube
youtube.com › mdtechvideos
Windows 11 Not Detecting Second Monitor FIX - Updated Methods [2024] - YouTube
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Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 2338309 › (article)-windows-11-troubleshoot-second-monitor-n
[Article] Windows 11 Troubleshoot Second monitor not detected (Updated 2024) - Microsoft Q&A
Then you will know you've tried everything in addition to Windows Update drivers. Adjust the screen resolution until it fits and looks best at Settings > System > Display. Check for a monitor driver by expediting Windows Updates (including Optional ...
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Lenovo Support
support.lenovo.com › eg › en › solutions › ht514243-an-external-monitor-may-not-display-content-when-connected-with-usb-c-cables-while-upgrading-to-windows-11-22h2-thinkpad-x13s
After upgrading to Windows 11 22H2, external monitor may not display when connected via USB-C port from system - ThinkPad X13s - Lenovo Support EG
This article shows you how to fix external monitor may not display when connected via USB-C port from system after upgrading to Windows 11
🌐
Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 4139658 › windows-11-cannot-detect-second-monitor
Windows 11 cannot detect second monitor. - Microsoft Q&A
Top answer
1 of 4
40

Hi, I am Dhanam, Independent Advisor here to work with you on this issue.

I know this has been difficult for you, Rest assured, I'm going to do my best to help you.

Uninstall your display driver

In the search box on the taskbar, type device manager, and then select it from the list of results.

Select the arrow to expand Display adapters.

Under Display adapters, right-click the adapter, then select Properties.

Select the Delete the driver software for this device check box, and then select OK.

Restart your device and Windows will attempt to reinstall the driver.

This is a public user-to-user support forum. I'm a user like you helping other users. I do not work for Microsoft and cannot access any user accounts.

I hope this can help you. If this still can't solve your problem, just let me know and I'll do my best to try to help you.

Regards,

Dhanam,

Independent Advisor.

2 of 4
11

Hi, I tried hard reset - hold power button on your PC till turn off. This simple solution worked.

🌐
Windows Central
windowscentral.com › microsoft › windows help
How to fix a second monitor not detected in Windows 10 and 11
September 17, 2025 - In this how-to guide, I'll explain several ways to troubleshoot and fix issues that block the system from automatically detecting the second monitor. This set of instructions is focused on Windows 10, but you can also refer to them if you're dealing with the same issues on Windows 11.
🌐
Microsoft Support
support.microsoft.com › en-us › surface › troubleshoot-connecting-surface-to-an-external-display-bc8f5121-a4cb-cf0b-5770-2df7a66a3b28
Troubleshoot connecting Surface to an external display - Microsoft Support
Follow the monitor manufacturer’s instructions to set both external displays to use DisplayPort 1.2 as an input source. For example, this might be called Multi-Stream Transport (MST), which allows the first display to pass the signal along to the second external display. If you’re using an adapter (like a USB-C to HDMI Adapter, USB-C to DisplayPort Adapter, or USB-C to VGA Adapter), check your connection.